[1/5] Header files for object parsing

This adds the structs and function declarations for parsing git objects.

Signed-Off-By: Daniel Barkalow <barkalow@iabervon.org>
Index: blob.h
===================================================================
--- /dev/null  (tree:5ca133e1b74aee39b2124c0ec9fd51539babb5e0)
+++ 1172a9b8f45b2fd640985595cc5258db3b027828/blob.h  (mode:100644 sha1:9a23db3a7deca67981b67ceb768411e31f723715)
@@ -0,0 +1,14 @@
+#ifndef BLOB_H
+#define BLOB_H
+
+#include "object.h"
+
+extern const char *blob_type;
+
+struct blob {
+	struct object object;
+};
+
+struct blob *lookup_blob(unsigned char *sha1);
+
+#endif /* BLOB_H */
Index: commit.h
===================================================================
--- /dev/null  (tree:5ca133e1b74aee39b2124c0ec9fd51539babb5e0)
+++ 1172a9b8f45b2fd640985595cc5258db3b027828/commit.h  (mode:100644 sha1:8cd20b046875f5f7e534b0607fdd97f330f53272)
@@ -0,0 +1,27 @@
+#ifndef COMMIT_H
+#define COMMIT_H
+
+#include "object.h"
+#include "tree.h"
+
+struct commit_list {
+	struct commit *item;
+	struct commit_list *next;
+};
+
+struct commit {
+	struct object object;
+	unsigned long date;
+	struct commit_list *parents;
+	struct tree *tree;
+};
+
+extern const char *commit_type;
+
+struct commit *lookup_commit(unsigned char *sha1);
+
+int parse_commit(struct commit *item);
+
+void free_commit_list(struct commit_list *list);
+
+#endif /* COMMIT_H */
Index: object.h
===================================================================
--- /dev/null  (tree:5ca133e1b74aee39b2124c0ec9fd51539babb5e0)
+++ 1172a9b8f45b2fd640985595cc5258db3b027828/object.h  (mode:100644 sha1:20f879e0867b8d6a052c458d9230fbc7786d2864)
@@ -0,0 +1,29 @@
+#ifndef OBJECT_H
+#define OBJECT_H
+
+struct object_list {
+	struct object *item;
+	struct object_list *next;
+};
+
+struct object {
+	unsigned parsed : 1;
+	unsigned used : 1;
+	unsigned int flags;
+	unsigned char sha1[20];
+	const char *type;
+	struct object_list *refs;
+};
+
+int nr_objs;
+struct object **objs;
+
+struct object *lookup_object(unsigned char *sha1);
+
+void created_object(unsigned char *sha1, struct object *obj);
+
+void add_ref(struct object *refer, struct object *target);
+
+void mark_reachable(struct object *obj, unsigned int mask);
+
+#endif /* OBJECT_H */
Index: tree.h
===================================================================
--- /dev/null  (tree:5ca133e1b74aee39b2124c0ec9fd51539babb5e0)
+++ 1172a9b8f45b2fd640985595cc5258db3b027828/tree.h  (mode:100644 sha1:14ebbacded09d5e058c7f94652dcb9e12bc31cae)
@@ -0,0 +1,17 @@
+#ifndef TREE_H
+#define TREE_H
+
+#include "object.h"
+
+extern const char *tree_type;
+
+struct tree {
+	struct object object;
+	unsigned has_full_path : 1;
+};
+
+struct tree *lookup_tree(unsigned char *sha1);
+
+int parse_tree(struct tree *tree);
+
+#endif /* TREE_H */

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